Entropy-stabilized oxides with medium configurational entropy. Issue 7 (1st April 2021)

• Record Type: Journal Article
• Authors: Chen, Kepi; Ma, Jinxu; Wang, Hetong; Li, Cuiwei; An, Linan
• Is Part Of: Ceramics international. Volume 47:Issue 7(2021)Part A
• Page Start: 9979
• Page End: 9983
• Publication Date: 2021-04-01
• Subjects: Entropy-stabilized oxides -- High-entropy oxides -- Medium configurational entropy; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2020.12.143
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Medium-entropy oxides, ((Mg1/3 Co1/3 Ni1/3 )1- x Zn x )O with x between 0.292 and 0.388, were synthesized by sintering the corresponding powder mixtures and proven to be entropy stabilized. The enthalpy of mixing of these oxides was estimated from their critical formation temperatures. The result showed that the enthalpy of mixing was linearly related to the ZnO concentration. The critical temperature for other compositions in the system was estimated using the extrapolated mixing enthalpy. It is found that the predicted Tc is consistent with experimental results.